Influence of rolling parameters on texture and formability of rolled AZ31 magnesium alloys at room temperature

To develop the AZ31 magnesium alloy plates (sheets) with low macro-texture intensity and high Erichen value, the effects of hot rolling process on the macro-texture and formability were investigated, under the rolling temperature of 250-450 ℃, pass reduction of 15%-35% and differential ratio of 1:1.5, respectively. The results show that, with increasing the rolling temperature or decreasing pass reduction, the basal plane texture intensity declines obviously and the Erichsen value improves. However, when the pass reduction drops to 5%, the coarse grain and decreasing formability are observed in the plates after being rolled at high temperature of 450 ℃. When the rolling temperature is 450 ℃ and pass reduction is 10%, the excellent formability of AZ31 magnesium can be obtained, i.e. the Erichsen value under room temperature is 5.35 mm, the base plane texture degree is 9852. ©, 2014, Science Press. All right reserved.